// Copyright 2011 David Galles, University of San Francisco. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other materials
// provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// The views and conclusions contained in the software and documentation are those of the
// authors and should not be interpreted as representing official policies, either expressed
// or implied, of the University of San Francisco
import { Algorithm,addControlToAlgorithmBar } from "@/components/algorithm/Algorithm";

var ARRAY_START_X = 100;
var ARRAY_START_Y = 200;
var ARRAY_ELEM_WIDTH = 50;
var ARRAY_ELEM_HEIGHT = 50;

var ARRRAY_ELEMS_PER_LINE = 15;
var ARRAY_LINE_SPACING = 130;

var TOP_POS_X = 180;
var TOP_POS_Y = 100;
var TOP_LABEL_X = 130;
var TOP_LABEL_Y = 100;

var PUSH_LABEL_X = 50;
var PUSH_LABEL_Y = 30;
var PUSH_ELEMENT_X = 120;
var PUSH_ELEMENT_Y = 30;

var SIZE = 30;

export class StackArray extends Algorithm {
	constructor(am, w, h) {
		super();
		this.init(am, w, h);

	}
	init(am, w, h) {
		super.init.call(this, am, w, h);
		this.addControls();
		this.nextIndex = 0;
		this.commands = [];
		this.setup();
		this.initialIndex = this.nextIndex;
	}
	addControls() {
		this.controls = [];
		this.pushField = addControlToAlgorithmBar("Text", "");
		this.pushField.onkeydown = this.returnSubmit(this.pushField, this.pushCallback.bind(this), 6);
		this.pushButton = addControlToAlgorithmBar("Button", "入栈");
		this.pushButton.onclick = this.pushCallback.bind(this);
		this.controls.push(this.pushField);
		this.controls.push(this.pushButton);

		this.popButton = addControlToAlgorithmBar("Button", "出栈");
		this.popButton.onclick = this.popCallback.bind(this);
		this.controls.push(this.popButton);

		this.clearButton = addControlToAlgorithmBar("Button", "清空栈");
		this.clearButton.onclick = this.clearCallback.bind(this);
		this.controls.push(this.clearButton);

	}
	enableUI(event) {
		for (var i = 0; i < this.controls.length; i++) {
			this.controls[i].disabled = false;
		}


	}
	disableUI(event) {
		for (var i = 0; i < this.controls.length; i++) {
			this.controls[i].disabled = true;
		}
	}
	setup() {
		this.nextIndex = 0;

		this.arrayID = new Array(SIZE);
		this.arrayLabelID = new Array(SIZE);
		for (var i = 0; i < SIZE; i++) {

			this.arrayID[i] = this.nextIndex++;
			this.arrayLabelID[i] = this.nextIndex++;
		}
		this.topID = this.nextIndex++;
		this.topLabelID = this.nextIndex++;

		this.arrayData = new Array(SIZE);
		this.top = 0;
		this.leftoverLabelID = this.nextIndex++;
		this.commands = new Array();

		for (var i = 0; i < SIZE; i++) {
			var xpos = (i % ARRRAY_ELEMS_PER_LINE) * ARRAY_ELEM_WIDTH + ARRAY_START_X;
			var ypos = Math.floor(i / ARRRAY_ELEMS_PER_LINE) * ARRAY_LINE_SPACING + ARRAY_START_Y;
			this.cmd("CreateRectangle", this.arrayID[i], "", ARRAY_ELEM_WIDTH, ARRAY_ELEM_HEIGHT, xpos, ypos);
			this.cmd("CreateLabel", this.arrayLabelID[i], i, xpos, ypos + ARRAY_ELEM_HEIGHT);
			this.cmd("SetForegroundColor", this.arrayLabelID[i], "#0000FF");

		}
		this.cmd("CreateLabel", this.topLabelID, "栈顶", TOP_LABEL_X, TOP_LABEL_Y);
		this.cmd("CreateRectangle", this.topID, 0, ARRAY_ELEM_WIDTH, ARRAY_ELEM_HEIGHT, TOP_POS_X, TOP_POS_Y);

		this.cmd("CreateLabel", this.leftoverLabelID, "", PUSH_LABEL_X, PUSH_LABEL_Y);

		this.highlight1ID = this.nextIndex++;
		this.highlight2ID = this.nextIndex++;

		this.animationManager.StartNewAnimation(this.commands);
		this.animationManager.skipForward();
		this.animationManager.clearHistory();

	}
	reset() {
		this.top = 0;
		this.nextIndex = this.initialIndex;

	}
	pushCallback(event) {
		if (this.top < SIZE && this.pushField.value != "") {
			var pushVal = this.pushField.value;
			this.pushField.value = "";
			this.implementAction(this.push.bind(this), pushVal);
		}
	}
	popCallback(event) {
		if (this.top > 0) {
			this.implementAction(this.pop.bind(this), "");
		}
	}
	clearCallback(event) {
		this.implementAction(this.clearData.bind(this), "");
	}
	clearData(ignored) {
		this.commands = new Array();
		this.clearAll();
		return this.commands;
	}
	push(elemToPush) {
		this.commands = new Array();

		var labPushID = this.nextIndex++;
		var labPushValID = this.nextIndex++;
		this.arrayData[this.top] = elemToPush;

		this.cmd("SetText", this.leftoverLabelID, "");

		this.cmd("CreateLabel", labPushID, "入栈元素: ", PUSH_LABEL_X, PUSH_LABEL_Y);
		this.cmd("CreateLabel", labPushValID, elemToPush, PUSH_ELEMENT_X, PUSH_ELEMENT_Y);

		this.cmd("Step");
		this.cmd("CreateHighlightCircle", this.highlight1ID, "#0000FF", TOP_POS_X, TOP_POS_Y);
		this.cmd("Step");

		var xpos = (this.top % ARRRAY_ELEMS_PER_LINE) * ARRAY_ELEM_WIDTH + ARRAY_START_X;
		var ypos = Math.floor(this.top / ARRRAY_ELEMS_PER_LINE) * ARRAY_LINE_SPACING + ARRAY_START_Y;

		this.cmd("Move", this.highlight1ID, xpos, ypos + ARRAY_ELEM_HEIGHT);
		this.cmd("Step");

		this.cmd("Move", labPushValID, xpos, ypos);
		this.cmd("Step");

		this.cmd("Settext", this.arrayID[this.top], elemToPush);
		this.cmd("Delete", labPushValID);

		this.cmd("Delete", this.highlight1ID);

		this.cmd("SetHighlight", this.topID, 1);
		this.cmd("Step");
		this.top = this.top + 1;
		this.cmd("SetText", this.topID, this.top);
		this.cmd("Delete", labPushID);
		this.cmd("Step");
		this.cmd("SetHighlight", this.topID, 0);

		return this.commands;
	}
	pop(ignored) {
		this.commands = new Array();

		var labPopID = this.nextIndex++;
		var labPopValID = this.nextIndex++;

		this.cmd("SetText", this.leftoverLabelID, "");


		this.cmd("CreateLabel", labPopID, "出栈中: ", PUSH_LABEL_X, PUSH_LABEL_Y);


		this.cmd("SetHighlight", this.topID, 1);
		this.cmd("Step");
		this.top = this.top - 1;
		this.cmd("SetText", this.topID, this.top);
		this.cmd("Step");
		this.cmd("SetHighlight", this.topID, 0);

		this.cmd("CreateHighlightCircle", this.highlight1ID, "#0000FF", TOP_POS_X, TOP_POS_Y);
		this.cmd("Step");

		var xpos = (this.top % ARRRAY_ELEMS_PER_LINE) * ARRAY_ELEM_WIDTH + ARRAY_START_X;
		var ypos = Math.floor(this.top / ARRRAY_ELEMS_PER_LINE) * ARRAY_LINE_SPACING + ARRAY_START_Y;

		this.cmd("Move", this.highlight1ID, xpos, ypos + ARRAY_ELEM_HEIGHT);
		this.cmd("Step");

		this.cmd("CreateLabel", labPopValID, this.arrayData[this.top], xpos, ypos);
		this.cmd("Settext", this.arrayID[this.top], "");
		this.cmd("Move", labPopValID, PUSH_ELEMENT_X, PUSH_ELEMENT_Y);
		this.cmd("Step");
		this.cmd("Delete", labPopValID);
		this.cmd("Delete", labPopID);
		this.cmd("Delete", this.highlight1ID);
		this.cmd("SetText", this.leftoverLabelID, "出栈元素: " + this.arrayData[this.top]);



		return this.commands;
	}
	clearAll() {
		this.commands = new Array();
		for (var i = 0; i < this.top; i++) {
			this.cmd("SetText", this.arrayID[i], "");
		}
		this.top = 0;
		this.cmd("SetText", this.topID, "0");
		return this.commands;

	}
}
